pushed

#!/usr/bin/env bash

dir="$(dirname $0)/ocaml"

if [[ ! -d $dir ]]; then
  echo "Expect OCaml clone in $dir" >&2
  exit 1
fi

cd "$dir"

if ! git rev-parse --verify origin/trunk &> /dev/null; then
  echo 'Could not find origin/trunk' >&2
  exit 1
fi

NO_REMOTE=()
PUSHED=()
OUT_OF_SYNC=()
while read -r branch; do
  remote=${branch#* }
  if [[ $remote = $branch ]]; then
    case $branch in
      backport-5.0|backport-4.*) continue;;
    esac
    NO_REMOTE+=("$branch")
  else
    branch=${branch% *}
    case $branch,$remote in
      backport-5.0,*|backport-4.*,*) continue;;
      *,origin/*) ;;
      *) continue;;
    esac
    if [[ $(git rev-parse "$branch") = $(git rev-parse "$remote") ]]; then
      PUSHED+=("$branch to $remote")
    else
      our_timestamp="$(git log -1 --format=%cd --date=unix $branch)"
      remote_timestamp="$(git log -1 --format=%cd --date=unix $remote)"
      if [[ $our_timestamp -gt $remote_timestamp ]]; then
        sync='\e[32mnewer'
        head_colour=32
        remote_colour=0
      else
        sync='\e[33molder'
        head_colour=33
        remote_colour=0
      fi
      sync="$sync\\e[0m (\\e[${head_colour}m$(date --date=@$our_timestamp '+%d-%b-%Y %H:%M:%S')\\e[0m vs \\e[${remote_colour}m$(date --date=@$remote_timestamp '+%d-%b-%Y %H:%M:%S')\\e[0m)"
      OUT_OF_SYNC+=("$branch with $remote $(git for-each-ref --format='%(push:track)' refs/heads/$branch) - HEAD is $sync")
    fi
  fi
done < <(git branch --format='%(refname:lstrip=2) %(upstream:lstrip=2)')

if [[ ${#PUSHED[@]} -gt 0 ]]; then
  echo -e "\e[32mUp-to-date\e[0m"
  for branch in "${PUSHED[@]}"; do
    echo "  - $branch"
  done
fi

if [[ ${#NO_REMOTE[@]} -gt 0 ]]; then
  echo -e "\e[31mUntracked branches\e[0m"
  for branch in "${NO_REMOTE[@]}"; do
    echo "  - $branch"
  done
fi

if [[ ${#OUT_OF_SYNC[@]} -gt 0 ]]; then
  echo -e "\e[33mOut-of-sync with origin\e[0m"
  for branch in "${OUT_OF_SYNC[@]}"; do
    echo -e "  - $branch"
  done
fi